55631089437 has 32 divisors (see below), whose sum is σ = 96498432000. Its totient is φ = 27642774720.

The previous prime is 55631089379. The next prime is 55631089457. The reversal of 55631089437 is 73498013655.

It is not a de Polignac number, because 55631089437 - 2⁶ = 55631089373 is a prime.

It is a super-2 number, since 2×55631089437² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55631089437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55631089457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5230062 + ... + 5240687.

It is an arithmetic number, because the mean of its divisors is an integer number (3015576000).

Almost surely, 2^55631089437 is an apocalyptic number.

It is an amenable number.

55631089437 is a deficient number, since it is larger than the sum of its proper divisors (40867342563).

55631089437 is a wasteful number, since it uses less digits than its factorization.

55631089437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10470793.

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 55631089437 in words is "fifty-five billion, six hundred thirty-one million, eighty-nine thousand, four hundred thirty-seven".